JPH0544722Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a cylindrical body that can accurately and easily measure the perpendicularity between the bottom and side surfaces of a cylindrical body such as a cylindrical ceramic honeycomb structure. This invention relates to a body squareness inspection device.

(Prior art) A device for inspecting the perpendicularity between the bottom and side surfaces of a cylindrical body includes a linear reference bar protruding from the top of a surface plate and a vertical column installed behind the reference bar. A device equipped with a displacement measuring device such as a dial gauge that can move forward and backward in different directions is used. However, with this type of squareness inspection device, when inspecting the entire side surface of a cylindrical body for squareness, it is necessary to press the cylindrical side surface accurately against the measuring tip of the dial gauge while rotating it. However, in order to perform an accurate inspection, skill is required and a large amount of time is consumed.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems and makes it possible to easily and accurately measure the perpendicularity between the bottom and side surfaces of a cylindrical body without requiring any special skill. It was completed for the purpose of being a squareness inspection device for cylindrical bodies that can be measured.

(Means for solving the problem) The squareness inspection device for a cylindrical body of the present invention, which was developed to solve the above problems, fixes a pair of left and right rollers that come into contact with the side surfaces of the cylindrical body on a surface plate. and the vertical 2 of the line connecting these rollers on the surface plate.
A rod with a movable roller at its tip that comes into contact with the lower side of the cylindrical body is installed on the equidistant line so that it can move forward and backward toward the center point of the roller, and a pillar extending upward is attached to this rod. The present invention is characterized in that a displacement measuring device is attached to the upper part of the movable roller, and includes a side stator that contacts the upper side surface of the cylindrical body in the vicinity of a position directly above the movable roller.

(Embodiment) Next, the present invention will be described in detail with reference to the illustrated embodiment. Reference numeral 1 denotes a surface plate having a base 2 for placing a cylindrical body on the upper surface of one end; A pair of left and right rollers are rotatably fixed on the top, and these rollers 3, 3 move the cylindrical body 30 by abutting the side surface 31 of the cylindrical body 30 placed on the base 2 of the surface plate 1. This is for rotating at a fixed position on the surface plate 1. On the perpendicular bisector of the line segment connecting the centers of these rollers 3, 3 on the upper surface of the surface plate 1,
Linear bearings 4 and 5 are provided at two locations, front and rear, and these linear bearings 4 and 5 allow a rod 7, which has a movable roller 6 at its tip, to move forward and backward toward the center of the rollers 3 and 3. Supported. A compression spring 8 is provided at the rear of the rod 7 to spring the rod 7 in the direction of the rollers 3, 3, so that the movable roller 6 at the tip of the rod 7 moves from the midpoint between the rollers 3 and 3 as shown in the figure. Cylindrical body 3
It is pressed toward the center of 0 and comes into contact with the lower side of the cylindrical body 30. Reference numeral 9 denotes a bracket provided at the center of the rod 7, and a column 10 extending perpendicularly upward to the surface of the surface plate 1 is attached to the bracket 9 so that its height can be adjusted with a screw 11. . A displacement measuring device 12 such as a dial gauge is attached to the upper part of this column 10, and its measuring element 13 is in contact with the upper side of the cylindrical body 30 near the position directly above the movable roller 6. . As the displacement measuring device 12, a dial gauge or the like, a differential transformer, or any other type of device can be used, and it is preferable to attach it to the pillar 10 so as to be able to adjust its position in the front and rear directions as shown in the figure. Also, the pillar 10 is replaced by the cylindrical body 3
It is preferable that the surface plate 1 is provided with a long hole 14 so that its lower end does not touch the surface plate 1 even when lowered to the height of 0. Although the surface of the surface plate 1 is illustrated as being horizontal in FIGS. 1 and 2, the lower surface 15 of the pedestal of the surface plate 1 is at an angle of about 10
Preferably, the surface of the surface plate 1 is inclined by about 10 degrees so that the cylindrical body 30 can enter between the rollers 3 by its own weight. Further, the rollers 3, 3, the movable roller 6, the roller serving as the measuring element 13 of the displacement measuring device 12, etc. are preferably made of ceramic in order to prevent them from being worn out due to contact with the cylindrical body 30.

(Function) With this configuration, if the side surface of the cylindrical body 30 is brought into contact between the pair of left and right rollers 3, 3 provided on the surface plate 1, these rollers 3, When the movable roller 6 at the tip of the rod 7, which is movable forward and backward on the perpendicular bisector of the line connecting the two points, is brought into contact with the lower side of the cylindrical body 30 by the elastic force of the compression spring 8. At the same time, the measuring element 13 of the displacement measuring device 12 on the upper part of the column 10 extending upward from the rod 7 comes into contact with the upper side of the cylindrical body 30. When the side surface 31 of the cylindrical body 30 forms a right angle to its bottom surface, and therefore the straight line connecting the tip of the probe 13 and the tip of the movable roller 6 becomes perpendicular to the surface of the surface plate 1. If the displacement measuring device 12 is adjusted in advance so that the reading of the displacement measuring device 12 is zero, when the upper side surface 2 of the cylindrical body 30 tilts toward the pillar 10 side or toward the opposite side, the displacement measuring device 12 The reading changes in the positive or negative direction, and the squareness of the cylindrical body 30 can be easily inspected. Also, the cylindrical body 30
By rotating it while pressing it against the rollers 3, 3, the squareness can be inspected over the entire circumference. Moreover, once the above adjustment is made, even if the diameter of the cylindrical body 30 changes and the depth of penetration between the rollers 3 and 3 changes, the movable roller 6, rod 7, and column will be adjusted accordingly. 10. Since the displacement measuring device 12, measuring element 13, etc. move forward and backward automatically on the perpendicular bisect of the line segment connecting the rollers 3, 3, the squareness can be accurately inspected. There is no need to adjust each part according to the diameter of the cylindrical body 30.

(Effects of the invention) As is clear from the above explanation, the present invention can adjust the perpendicularity between the bottom and side surfaces of a cylindrical body such as a cylindrical ceramic honeycomb structure all around the body without requiring any special skill. It can be accurately and easily tested over a period of time, and is useful for improving testing efficiency. Therefore, the present invention has extremely great practical value as a cylindrical body squareness inspection apparatus that solves the problems of the conventional apparatus.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a plan view thereof. 1... Surface plate, 3... Roller, 6... Movable roller, 7... Rod, 10... Column, 12... Displacement measuring device, 13... Measuring head, 30... Cylindrical body.

Claims (1)

[Scope of utility model registration request] A pair of left and right rollers 3, 3 that come into contact with the side surface 31 of the cylindrical body 30 are fixed on the surface plate 1, and a vertical line segment 2 connecting these rollers 3, 3 on the surface plate 1 is fixed.
A rod 7, which has a movable roller 6 at its tip that comes into contact with the lower side of the cylindrical body 30, is provided on the equidistant line so that it can freely move forward and backward toward the center point of the rollers 3, 3. A pillar 10 is attached to the top of the pillar 10, and a side stator 1 is installed on the top of the pillar 10, which is in contact with the upper side of the cylindrical body 30 in the vicinity of the position directly above the movable roller 6.
3. A squareness inspection device for a cylindrical body, characterized in that a displacement measuring device 12 having a displacement measuring device 12 is attached thereto.